Lighting unit
阅读说明:本技术 照明单元 (Lighting unit ) 是由 保罗·斯巴罗 于 2019-02-08 设计创作,主要内容包括:一种用于工具或仪器的照明单元,其包括壳体、壳体内的电池(100)、灯泡(103)以及位于壳体内并将灯泡连接至电池的电路(102)。壳体具有开关部分(96),并且电路的一部分被安装在开关部分上,使得开关部分(96)能够被移动以断开和接通电路(102)。安装装置(90、92)布置成将壳体安装在工具或仪器中以绕旋转轴线旋转。(A lighting unit for a tool or instrument includes a housing, a battery (100) within the housing, a light bulb (103), and circuitry (102) within the housing connecting the light bulb to the battery. The housing has a switch portion (96) and a portion of the electrical circuit is mounted on the switch portion such that the switch portion (96) can be moved to open and close the electrical circuit (102). Mounting means (90, 92) are arranged to mount the housing in a tool or instrument for rotation about an axis of rotation.)
1. A lighting unit for a tool or instrument, the unit comprising a housing, a battery within the housing, a light bulb and an electrical circuit within the housing and connecting the light bulb to the battery, the housing having a switch portion on which a portion of the electrical circuit is mounted such that the switch portion can be moved to open and close the electrical circuit, and mounting means arranged to mount the housing for rotation about an axis of rotation.
2. The lighting unit of claim 1, wherein the housing comprises an outer wall extending about the axis of rotation.
3. A lighting unit as claimed in claim 1 or claim 2, comprising two parallel coaxial shaft portions, each shaft portion being arranged to be rotatably supported in the tool or instrument.
4. The lighting unit of claim 3, wherein said bulb is housed within one of said shaft portions.
5. A lighting unit as claimed in any one of the preceding claims, wherein the switch portion has a cam formed thereon and the cam has a cam surface which can be depressed to complete the electrical circuit.
6. A lighting unit as claimed in any one of the preceding claims, wherein the switch portion is movable between a first position in which it opens the electrical circuit and a second position in which it closes the electrical circuit.
7. A tool or instrument comprising a body and a lighting unit, wherein the lighting unit is according to any one of the preceding claims.
8. The tool or instrument of claim 7, wherein the body defines an opening into which the lighting unit is removably insertable, and the opening is shaped so as to support the lighting unit when inserted therein.
9. A tool or instrument according to claim 7 or claim 8 when dependent on claim 6, wherein the switch portion is arranged to be frictionally retained in each of the first and second positions.
10. A tool or instrument according to claim 7 or claim 8 when dependent on claim 6 wherein the switch portion is spring biased towards the first position.
11. A tool or instrument according to any one of claims 7 to 10 wherein the housing is movably mounted in the body so as to be movable between a first position and a second position, and the body includes a switch surface arranged to act on the switch portion to complete an electrical circuit when the housing is in the second position.
12. A tool or instrument according to claim 11 wherein the switch portion of the housing has a housing cam surface formed thereon, the housing cam surface being arranged to act through the switch surface when the housing is moved from the first position to the second position to complete an electrical circuit.
13. A tool or instrument according to claim 11 or 12 wherein the switch surface is shaped to form a fixed cam surface and the switch portion has a contact surface thereon arranged to act through the fixed cam surface when the housing is moved from the first position to the second position to close the switch.
14. A tool or instrument according to any one of claims 7 to 13, wherein the housing is rotatably mounted in the body and arranged to rotate between the first and second positions.
15. The tool or instrument of claim 14 wherein the housing is rotatable about an axis of rotation and has an outer wall that curves about its axis of rotation.
16. The tool or instrument of claim 15, wherein a portion of the curved outer wall is exposed such that the housing is rotatable between the first position and the second position by pushing on the outer wall.
17. A tool or instrument according to claim 15 or 16, wherein the housing further comprises side walls forming the flexible portion.
18. A spirit level comprising a main body, a bubble vial mounted in the main body and a lighting unit, wherein the lighting unit comprises a housing, a battery within the housing, a light bulb and an electrical circuit within the housing connecting the light bulb to the battery, the housing having a switch portion on which a portion of the electrical circuit is mounted such that the switch portion is movable to open and close the electrical circuit.
19. The level according to claim 18 wherein said housing is slidably mounted in said body and arranged to slide between said first and second positions.
Technical Field
The present invention relates to a lighting unit. It is particularly suitable for illumination of tools and instruments, such as levels, but is also applicable to other areas where small area illumination is required.
Background
It is known to provide illumination on the level to improve the visibility of the bubble and the marking of the bubble alignment. Similarly, illumination in other instruments is also well known. However, levels and other instruments are often used in wet or dirty conditions and known lighting systems may become unreliable if they become wet or dirty. They are also complicated to manufacture and assemble.
Disclosure of Invention
The invention provides a lighting unit, for example for a tool or instrument, the unit comprising a housing, a battery within the housing, a light bulb and an electrical circuit within the housing and connecting the light bulb to the battery, the housing having a switch portion on which a portion of the electrical circuit is mounted so that the switch portion can be moved to open and close the electrical circuit, and mounting means for mounting the housing for rotation about an axis of rotation.
The housing may include an outer wall extending about the axis of rotation. The housing may comprise two parallel coaxial shaft portions, each arranged to be supported in a tool or instrument. The housing may be rotatable about an axis of rotation and may have an outer wall that is curved about its axis of rotation. The lighting units may form a fingerwheel.
The housing may further include a sidewall forming the switching portion. The side wall may have a cam mounted thereon. The cam may have a generally axial cam surface facing the lighting unit.
The invention also provides a level comprising a body, a bubble vial mounted in the body, and a lighting unit, wherein the lighting unit comprises a housing, a battery within the housing, a light bulb, and an electrical circuit within the housing. A housing having a switch portion which may be, for example, a flexible or movable portion, and a portion of the electrical circuit is mounted on the switch portion such that the switch portion can be moved to open and close the electrical circuit.
The body may define an opening into which the lighting unit may be removably inserted. The opening may be shaped to support the lighting unit when the lighting unit is inserted into the opening.
The switching section is movable between a first position in which the switching section opens the electrical circuit and a second position in which the switching section opens the electrical circuit. The switch portion may be arranged to be frictionally retained in each of the first and second positions. Alternatively, the switch portion may be spring biased toward the first position.
The housing is movably mounted in the body. The housing is movable between a first position and a second position. The body may comprise a switch surface arranged to act on the switch portion to complete the electrical circuit when the housing is in the second position.
The switch portion of the housing may have a housing cam surface formed thereon. The housing cam surface may be arranged to act through the switching surface when the housing is moved from the first position to the second position, thereby completing the electrical circuit.
The switch surface may be shaped to form a fixed cam surface and the flexible portion may have a contact surface thereon arranged to act through the fixed cam surface when the housing is moved from the first position to the second position, thereby closing the switch.
It will be appreciated that there may be cam surfaces on one or both of the housing and the fixed body. If there are two cam surfaces, they may interact. If there is only one, a switch surface may be provided to act on or through the cam surface, which may be a simple flat surface.
Alternatively, instead of using a cam, the switch surface may be part of or supported on an elastic member and may be arranged to be in contact with the switch portion of the lighting unit when the lighting unit is in the second position.
The housing may be slidably mounted in the body and arranged to slide between a first position and a second position.
Alternatively, the housing may be rotatably mounted in the body and arranged to rotate between the first and second positions. The housing may be rotatable about an axis of rotation and may have an outer wall that curves about the axis of rotation. The curved outer wall may be at least partially exposed such that the housing may be rotated between the first position and the second position by pushing on the outer wall. In this way, the lighting unit may form a fingerwheel.
The housing may further comprise a side wall, which may be annular and may form the flexible portion.
The lighting unit may comprise two parallel coaxial shaft portions, each rotatably supported in the body. The bulb may be accommodated in one of the shaft portions. The shaft portion or the entire housing may be formed of a translucent or transparent material.
The level or lighting unit may also include any one or more of the features of the preferred embodiments of the present invention in any feasible combination, as will now be described with reference to the accompanying drawings.
Drawings
FIG. 1 is a perspective view of an illumination unit forming part of a level according to an embodiment of the invention.
FIG. 2 is a perspective view of the lighting unit of FIG. 1 incorporated into the interior components of a level according to an embodiment of the present invention.
FIG. 3 is a perspective view of components of the level and lighting unit of FIG. 2 in use.
Fig. 3a is a schematic illustration of a modification to the level of fig. 3.
FIG. 4 is a plan view of a component of a level according to another embodiment of the invention.
FIG. 5 is a perspective view of components of the level of FIG. 4.
FIG. 6 is a perspective view of an illumination unit forming part of the level of FIG. 4.
FIG. 7 is a perspective view of components of the level of FIG. 4 in use.
Fig. 8 is a side view of the internal parts of the lighting unit of fig. 6. And
fig. 9 is an enlarged view of the components of fig. 8.
Detailed Description
Referring to fig. 1, a
Referring to fig. 2 and 3, the level includes a
The tops of the
If a slide switch 25 is present, the
In a modification to this arrangement, the switch 25 may be spring biased towards its closed position and may be arranged to move to its open position as described above when the lighting unit is inserted into the level and to move to its closed position under the influence of the spring bias when the lighting unit is removed from the level.
Referring to fig. 3a, the
Referring to fig. 4 and 5, in an alternative arrangement, the illumination unit may be arranged to be permanently supported in the light receiving
Referring also to fig. 6, the rotatable lighting unit comprises a housing 86, the housing 86 comprising a main part 88, the main part 88 being of a generally cylindrical shape having a central axis XX and two shaft parts 90, 92 extending from opposite sides of the main part 88. Both shaft members 90, 92 are circular in cross-section and are arranged coaxially with each other and with the main member 88 of the housing. The shaft members 90, 92 are arranged to be received and supported in the seat portions 80, 82 of the insert 54a so as to support the lighting unit 84.
The main part 88 of the housing comprises a curved
For example, as shown in fig. 8 and 9, the battery pack 100 may be fixed relative to one of the annular walls 98 of the housing and the
One of the annular walls of the housing, such as the front
Referring again to fig. 5, the body of the level, such as the insert 54a, may include a switch surface 120, the switch surface 120 being arranged to act on the lighting unit 84 to turn the light bulb on and off as the lighting unit rotates in the
Referring to fig. 7, a
In operation, when the lower part 118 of the cam 114 is opposite the switch surface 120, the switch surface 120 is clear of the cam 114, and thus the two
It will be understood that the details of the embodiments shown in the drawings may be modified in various ways obvious to the skilled person, and that the embodiments shown are purely non-limiting examples of how the invention may be practiced.
For example, in one variation, the light may be provided on an edge of the rotatable lighting unit, rather than in one of the ends. When the lighting unit is located within the level, the lighting unit may be oriented such that an outer wall of the lighting unit faces the vial.
- 上一篇:一种医用注射器针头装配设备
- 下一篇:动态检测装置